BoM forecasts 40C for Perth as expected five-day heatwave be Feb 7, 2016 15:11:48 GMT 12 Quote Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by Bishopdale Weather on Feb 7, 2016 15:11:48 GMT 12 Perth is heading for a scorching 40 degrees Celsius on day one of a heatwave that is expected to last for at least five days.The temperature is forecast to climb to 42C on Monday and Tuesday, a slightly cooler 41C on Wednesday and 39C on Thursday.Bureau of Meteorology (BoM) duty forecaster Steve McInerney said the hot spell was being caused by a strong high pressure system. www.weatherzone.com.au/news/bom-forecasts-40c-for-perth-as-expected-five-day-heatwave-begins/449957